Preheat your oven to 400°F (200°C) and prepare a baking dish with nonstick spray.

In a small bowl, mix lemon zest, lemon juice, minced garlic, black pepper, and olive oil. Rub the mixture over the chicken breasts.

Heat olive oil in a skillet over medium heat. Sear each chicken breast for 3-4 minutes per side until golden brown.

Transfer the seared chicken to the preheated oven and bake for 20-25 minutes or until the internal temperature reaches 165°F (75°C).

In the same skillet, pour in chicken broth and scrape up any browned bits. Simmer until slightly thickened.

Serve the chicken drizzled with sauce, garnished with lemon slices if desired.